The world’s most painful insect sting - Justin Schmidt

1,864,440 views ・ 2021-04-19

TED-Ed


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譯者: Camila Lin 審譯者: Amanda Zhu
00:06
Welcome to It Hurts!
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歡迎來到《好痛哦!》
00:09
One of these creatures is thought to possess
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在這三種昆蟲裡,
00:11
the world’s most painful insect sting.
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有一種蟲有全世界最毒的刺。
00:15
If you were to guess, would it be:
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如果你想先猜猜看,
00:17
the ant that forages in rainforest canopies?
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你覺得究竟會是 在雨林樹冠裡覓食的螞蟻,
00:21
The bee that protects a hive of delectable honey?
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是保護存有美味蜂蜜巢穴的蜜蜂,
00:24
Or the wasp that paralyzes tarantulas?
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還是能夠麻痺狼蛛的黃蜂? [還活著]
00:29
Let’s find out!
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讓我們一起找出答案吧!
[細腰亞目:昆蟲綱下的一個亞目]
00:32
Ant, bee, and wasp venoms contain a variable cocktail of compounds
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螞蟻、蜜蜂跟黃蜂的毒液, 都含有數種化合物,
00:37
designed to incite unsavory sensations and even compromise bodily functions.
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能引發不適反應, 甚至損害身體機能。
00:44
Entomologist Justin O. Schmidt’s sting pain index
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昆蟲學家賈斯汀‧施密特制定的 「施密特螫痛指數」,
00:48
describes and ranks the pain of around 100 kinds of insect stings.
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描述被近百種蟲的毒刺螫到後的疼痛, [技術問題,請稍待]
並為它們評定等級。 [昆蟲名/疼痛指數/備註]
00:54
One of our three competitors claims the nastiest one.
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而冠軍就是我們的其中一個參賽者。
00:59
First, let’s consider the Western honeybee’s sting,
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先讓我們來看看蜜蜂的刺吧。 [0.5~0.625吋]
01:03
Schmidt says it’s like “a flaming match head has landed on your arm
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施密特形容被牠螫到就像是 「燃燒的火柴棒掉在你的手臂上,
01:08
and is quenched first with lye and then sulfuric acid.”
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先用鹼液,再用硫酸撲滅火勢。」 [模擬情境]
01:13
This discomfort is accomplished with venom
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引起如此劇痛的毒液, [非模擬情境,真的很痛]
01:15
that’s packed with a pain-causing peptide called “melittin”
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含有大量引發疼痛的胜肽「蜂毒肽」,
01:20
and flesh-softening enzymes that disperse the venom.
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以及能柔軟肌膚、擴散毒液的酵素。
01:24
These enzymes may also cause allergic reactions
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這些酵素也可能會引發過敏反應, [模擬情境]
01:27
and even lead to fluid buildup in the lungs.
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甚至可能導致肺積水。
01:30
Because worker honeybees have barbed stingers that burrow into certain victims,
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因為工蜂刺入目標的毒針有倒鉤,
01:36
they usually can't sting without leaving part of their bodies behind,
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在螫人時,身體的一部分也會脫落, [螫這裡]
01:40
which ultimately kills them.
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最終導致牠們的死亡。
01:43
Since only the queen bee has the ability to reproduce,
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因為只有女王蜂有生育能力,
01:46
a worker bee’s self-sacrifice helps ensure that the colony— and their genes—
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一隻工蜂的自我犧牲,
能確保蜂群跟基因都能延續。
01:51
will prevail.
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01:53
But before they go,
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但在死亡之前, [又一個犧牲者]
01:55
they release an alarm pheromone that activates a mass attack
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牠們會釋放一種警戒費洛蒙, 動員蜂群一起攻擊目標,
01:59
and often targets some of the most vulnerable sites on their victim’s body.
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還常針對目標身體最脆弱的幾個部位。
02:07
The tarantula hawk wasp sting is, as Schmidt says,
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根據施密特的描述,被沙漠蛛蜂螫到會 [沙漠蛛蜂,兩吋]
02:11
“blinding, fierce, shockingly electric ... A bolt out of the heavens.
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「頭暈目眩,劇痛,有強烈觸電感…… 就像是從天而降的雷霆,
02:17
Lie down and scream.”
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你只能躺著放聲尖叫。」 [模擬情境]
02:20
The sensation might last just 5 agonizing minutes for humans,
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對人類來說, [非模擬情境,真的很痛]
這痛苦可能只會持續五分鐘,
02:24
but it leaves tarantulas— the wasp’s preferred target— permanently paralyzed.
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但牠們最喜歡的獵物,狼蛛,
卻會因此永久癱瘓。
02:30
After the wasp stings a tarantula, aiming for a crucial bundle of nerves,
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在蛛蜂螫刺狼蛛體內特定的神經束後, [螫這裡]
02:35
it lays an egg on the immobilized spider.
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牠會將卵產在動彈不得的狼蛛體內。
02:39
Once hatched, the wasp’s larva spends its formative days
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幼蟲孵化後,
在整個幼蟲時期, 牠都會待在營養充足的狼蛛體內,
02:43
in the bountiful environment of the tarantula’s body—
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02:46
devouring it alive.
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啃食還活著的宿主。
02:48
Aside from paralyzing the tarantula,
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除了癱瘓,
02:51
the wasp’s sting doesn’t seem to do further harm.
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蛛蜂的刺並不會對狼蛛造成其他傷害。 [還活著]
02:54
This functions to preserve the spider as fresh meat for the wasp’s offspring.
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這是為了確保在蛛蜂幼蟲孵化後, 還能吃到狼蛛的新鮮美味。
03:01
The rainforest-dwelling bullet ant’s sting yields
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施密特說,被住在雨林的子彈蟻螫到, [子彈蟻,1.5 吋]
03:06
“pure, intense, brilliant pain.
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會帶來「純粹、狂暴、 無法忍受的劇痛,
03:08
Like walking over a flaming bed of charcoal
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就像是走在燒紅的木炭上, [模擬情境]
03:12
with a 3-inch nail embedded in your heel,” according to Schmidt.
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腳後跟還插著三寸長的釘子。」
03:17
And this torture often lasts more than 12 hours.
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而且這份折磨經常超過十二小時。 [模擬情境]
03:21
A neurotoxic peptide called poneratoxin
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疼痛之所以會持續這麼久, 是因為人體試著代謝
03:24
that our bodies struggle to degrade is what makes the pain last so long.
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這種叫做「針蟻毒素」 的神經毒性胜肽。
03:31
In addition to agony, poneratoxin can induce trembling, cold sweats,
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除了痛苦,它也會導致顫抖、冷汗、 [模擬情境]
03:36
nausea, vomiting, and even an abnormal heartbeat.
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噁心、嘔吐,甚至是心律不整。 [非模擬情境,真的很痛]
03:43
The bullet ant is, in fact, crowned with the most painful insect sting.
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事實上,子彈蟻是世界上 螫人最痛的昆蟲。
03:49
It's thought that they may have evolved such an excruciating defense
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一般認為,這是因為 在牠們覓食的雨林樹冠叢中,
03:53
because they forage in rainforest canopies loaded with predators
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住著許多喜愛蛋白質小點心的掠食者,
03:56
looking for proteinaceous snacks.
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才讓牠們進化出這種 令人痛不欲生的防禦手段。
03:59
They can’t simply jump or fly away,
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因為它們既不會跳也不能飛,
04:02
so perhaps they’re better off with this reliable, rather off-putting weapon.
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所以這可靠且讓人退避三舍的武器 讓它們佔據優勢。
04:07
The tarantula hawk wasp’s formidable sting
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沙漠蛛蜂的強大毒刺,
04:10
clocks in as the second most painful on the scale.
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在「施密特螫痛指數」中勇奪第二。
04:14
And it’s likely the reason this wasp has no known predators.
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這很可能是牠沒有掠食者的理由。
04:18
Honeybee stings are in the middle of the pain scale.
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蜜蜂的刺在「施密特螫痛指數」中
排名中間。
04:22
But when many sting simultaneously,
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但如果同時被許多蜜蜂螫,
04:25
what might’ve felt manageable at first becomes all the more dangerous.
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一開始的也許尚能忍受, 但終會對身體造成嚴重傷害。
04:30
In fact, insect stings helped enable the evolution of complex colonies
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實際上,昆蟲的毒刺有助於群體演化。
04:35
that would otherwise represent an easy feast to predators.
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若非如此,牠們就只會是掠食者 能輕鬆享用的大餐。
04:40
Some stinging insects are, of course, more aggressive than others,
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有些會螫人的昆蟲的確更具攻擊性,
04:44
but most of the time, they only sting us when we provoke them.
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但大多時候,它們之所以攻擊我們, 是因為我們挑釁在先。
04:53
The truth hurts.
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事實也會螫痛人的。
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